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Finding the Fourth Proportional to 99,414.43, 149,121.65 and 36,239.29

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Solution

The fourth proportional to 99,414.43, 149,121.65 and 36,239.29 is: 54,358.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,414.43 : 149,121.65 = 36,239.29 : x
  2. Step 2: Convert to fraction form
    99,414.43/149,121.65 = 36,239.29/x
  3. Step 3: Cross multiply
    99,414.43x = 149,121.65 × 36,239.29
  4. Step 4: Simplify right side
    99,414.43x = 5,404,062,719.63
  5. Step 5: Solve for x
    x = 5,404,062,719.63/99,414.43
  6. Step 6: Final answer
    x = 54,358.94

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.